410 
IV. MUSCI. 
[ Blcranum . 
of various habit. Fruitstalks terminal, slender, sometimes 2-3 together. 
Capsule inclined or cernuous, often strumose, rather long ; teeth 16, subu- 
late, joined at the base, transversely barred, 2-fid (often unequally) to the 
middle, rarely 3-fid, when dry spreading at the base and then curling upwards. 
Operculum with a long oblique beak. Calyptra cucullate. 
One of the largest genera of Mosses, very abundant in all regions of the globe, hut espe- 
cially the temperate and cold. 
I. Leijcoloma. Fruitstalk on a very short lateral shoot. Margin 
of leaf white, composed of long slender flexuous cells. 
Upper cauline leaves piliferous 1. D. Sieberianum. 
Cauline leaves all acuminate 2. D. incanum. 
II. Tridontium. Teeth usually 3-fid. Leaves oblong-lanceolate, 
obtuse 3. D. Tasmanicum. 
III. Dicuanum. Margin of leaf not pellucid. Teeth 2-fid 
(rarely 3-fid). 
* Leaves with broad subqnadrate sheathing bases. 
Stems 1-2 in. Leaves squarrose. Capsule suberect . . . 4. D.vaginaium. 
Stems in. Leaves flexuous Capsule cernuous, strumose 5. D. Schreberi. 
Stems 5-3 in. Leaves strict. Capsule suberect, not strumose 6 . D. campylophyUum. 
** Leaves without broad quadrate sheathing bases, usually secund. 
Capsule equal, erect 1.1). trichopodum. 
Capsule unequal, inclined or cernuous. 
f Stems stout. Perichsetial leaves long, striate. 
-t- Nerve stout broad. 
Leaves ovate-landeolate below, setaceous above 8 . D. dicarpon. 
Leaves convolute 9. D. robustum. 
Nerve more slender. 
Stems 1 in. high. Leaves spinulose-serrate 10. D. fasciatum. 
Stems 2-4 in. high. Leaves serrated towards the tip . . 11. B. Billardieri. 
ft Stem stout or slender. Perichsetial leaves short. 
Fruitstalk 1 in. long, stout 12. B. setosum. 
Fruitstalk hardly longer thau the leaves . . . . 13. D. Menziesii. 
1. D. Sieberianum, Hornsch. ; — FI. N. Z. ii. 67. Stems ^-1 in. high, 
fastigiately branched, T U in. diam. Leaves yellowish, falcate, convolute, 
ovate-lanceolate, acuminate, the upper piliferous, papillose at the back, peri- 
chtetial sheathing, piliferous ; margin entire with a narrow pellucid border. 
Fruitstalks ^-1 in. long, slender, red. Capsule small, ovoid, cernuous; 
operculum with a long beak. — Leucodon pallidas. Hook. Muse. Exot. t. 172. 
Var. /3. Leaves oppressed when dry, nearly smooth at the back. 
Northern Island : Bay of Islands, a. Cunningham. P- On wet rocks, J. B. IT. 
(Australia, Tasmania.) 
/a . incanum, Mitt. mss. ( Leucoloma ). — Stems £-1 in. high, creeping 
below, fastigiately-branched. Leaves pale-yellow-green, erecto-patent, sub- 
secund, rather crisped when dry, ovate-lanceolate, acuminate, convolute, none 
piliferous, except the perichsetial. Fruitstalk in. long, red. Capsule 
subcylindrical ; operculum with a beak as long as the capsule. 
Northern Island : Sinclair. 
3. D. Tasmanicum, Ilook.f. in Hook. Ic. Plant, i. 248 ( Tndontium ) ; 
- — FI. N. Z. ii. 65. Stems erect, tufted, 1-2 in. high, branched. Leaves pale 
or dark green or reddish, lax, spreading, lanceolate-oblong, obtuse, channelled. 
